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Get Full Access to College Physics - 1 Edition - Chapter 21 - Problem 4cq
Get Full Access to College Physics - 1 Edition - Chapter 21 - Problem 4cq

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# Why is the power dissipated by a closed switch, such as in

ISBN: 9781938168000 42

## Solution for problem 4CQ Chapter 21

College Physics | 1st Edition

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Problem 4CQ

Problem 4CQ

Why is the power dissipated by a closed switch, such as in Figure 21.43, small?

Step-by-Step Solution:
Step 1 of 3

Solution 4CQ

P = V2 / R

V = IR

P = (IR)2 / R

=  I2 R

the power dissipated is directly proportional to the resistance. As the switch is closed therefore the resistance has a negligible value and hence the power dissipated is small.

Step 2 of 3

Step 3 of 3

##### ISBN: 9781938168000

The full step-by-step solution to problem: 4CQ from chapter: 21 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. College Physics was written by and is associated to the ISBN: 9781938168000. This textbook survival guide was created for the textbook: College Physics , edition: 1. This full solution covers the following key subjects: closed, dissipated, figure, power, Small. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The answer to “Why is the power dissipated by a closed switch, such as in Figure 21.43, small?” is broken down into a number of easy to follow steps, and 15 words. Since the solution to 4CQ from 21 chapter was answered, more than 822 students have viewed the full step-by-step answer.

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